Molding-machine.



PATENTED 00122. 1907.

F. J. GBBHRING. MOLDING MACHINE. APPLICATION FILED JAN. 23, M507.

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P.J.G BEHRING. MOLDING MACHINE.

APPLIGATION FILED JAN. 23, 1907.

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919869979. PATENTED 09T. 22,1997.- P. J. GBBHRING..

MOLDING MAGHINB. APPLIGATION PLLED JAN. 2s, 1997.

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PATENTED' 00T. 22. 1907.

F. J. GEEHRING MOLDING MACHINE.

APPLIoATIoN FILED JAN. 2s, 1907.

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PATENTED OCT, 22. 1907..

F. J. GEEHRING. MOLDING MAGH'INE. APPLICATION FILED IAN. 2s, 1907.

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FREDERICK .1. GEEHRING, OF PHILADELPHIA, PENNSYLVANIA.

MOLDING-MACHINE Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed January 23, 1907. Serial No. 353,612.

To all whom it lmay concern:

13e it known that I, FREDERICK .1. GEEHRING, a sub ject of the Emperoroi Germany, residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Molding-Machine, of whichthe following is a specification.

My present invention consists of a novel construction of molding machinein which a reversible drop plate and stripping plate are employedwhereby I am enabled to reduce to a minimum 'the time essential or theproduction of a satisfactory casting and wherein any desired type orcontour of pipe fittings may be cast.

It further consists of a novel construction ol' a molding machine inwhich the [iasks are hinged together and provided with suitable meansfor locking them in assembled position.

It further consists of a novel construction of revel'- sible drop andstripping plates which are adapted to be secured in such a manner` thatthey are always` in proper alinvement with the parts coacting therewith.

It further consists of other novel features of construetion, all as willbe hereinafter set forth.

For the purpose oi illustrating my invention, I have shown in theaccompanying drawings one form of a machine since this embodiment bestillustrates the principles thereof and gives satisfactory and reliableresults in practice, although it is to be understood that the variousinstrumentalities of which my invention consists can be variouslyarranged and organized and that my invention is not limited tothe exactarrangement and.

organization of these instrumen talities as herein shown.

Figure 1 represen ts a plan view of a molding machine embodying myinvention, certain parts thereofl being removed for elearness oiillustration. Fig. 2 represents a. side elevation of Fig. l. Fig. 3represents asectional view ol a portion of Fig. l. Fig. 4 represents asectional view similar to Fig. 3, but showing the parts in a difierentrelation to each other'. Fig. 5 represents a plan view showing the dropplate in position, the stripping plate having been removed. Fig. Grepresents a section on line :t-:t Fig. 5. Fig. 7 represents a sectionon line y-y Fig. 1l. Fig. 8 represents a plan View ofthe bottom plate.Fig. 9 represents a plan view of the top plate. Fig. 1.0 represents aperspective view oi one of the prints seen in Fig. 9, in detachedposition. Fig. ll represents a perspective vieu7 of one of the cores.Fig.

l2 represents a perspective view oi one oi the lockingmembers. Fig. 13represents a side elevation of one of the patterns. Fig. 14 represents aside elevation of the other pattern. Fig. 15 represents a sectional viewof Fig. 9, said section being taken through the fastening devices. Fig.16 represents a perspective view of the bottom flask. Fig. 17 representsa perspective view of the top flask. Fig. 18 represents a plan view ofthe arbor. Fig. 19 represents a section on 2 g of Fig. i8.

Fig. 2O represents a section on a a Fig. 18. Fig'. 21 represents asectional view of Fig. 22. Fig. 22 represents a plan view of the arborand sand core. Fig. 23 represents a side elevation of a portion of Fig.18 showing the manner in which the independent members of the arborinterlock. Fig. 24 represents a perspective view of one of the handprints. Fig. 25 represents a side elevation of a portion of the upperandlower flasks in assembled position showing the manner in which the twoflasks are secured m assembled position.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawingsz-1 designates a casing, mounted on standardsor supports 2 in any suitable manner.

3 designates guides carried by the casing l in which journal boxes 4 aremovably mounted. The boxes are adjusted by means of set screws 5provided with lock nuts 6, and passing through fianges or lugs 7 carriedby the casing l, the ends of said screws engaging the journal boxes 4.

8 designates rods or shafts journaled in the boxes 4 and passing throughslots or openings 9 in the casing l.

10 designates a link fixedly mounted on one of the shafts S and havingone side thereof near its outer end cut away to form a shoulder l1against Whichabuts during the operation a connecting arm or member 12,the forked end of which is pivoted at 13 to said link 10.

14 designates a link fixedly secured to the other ofthe shafts 8 andhaving its outer end recessed or cut away to form a shoulder or stop 15for the arm 12, which latter is pivoted at 1G to said arm. The link 14is provided with an actuating lever or handle 1.7.

1S designate cams mounted on the rods or shafts 8 and adapted to coactwith cross bars 19, the ends of which have suitable grooves or recesses20, preferably V shaped, therein. y

21 designate guides carried by the casing 1 and with which the crossbars or pieces 19 engage.

22 designate grooves or slots in the cross members 19 in which areadapted to be seated the flanges or ribs 23 of a reversible drop plate24, it being noted that these fianges or ribs are located on oppositesides of the plate 24.

25 designate guide members on the plate 24, the outer ends oi which havepreferably V shaped grooves 2G therein, it being noted that one of theseguide members is cut away to leave room for the arbor which willhereinafter be described.

27 and 28 designate apertures in the ribs 23 on one side of the dropplate 24.

29 designate guide members on the opposite side of the plate 24 as seenin Fig. 8 and their ends are adapted to engage the guides 21. The ribs23 are provided with apertures 30 and 31.

32 designates the reversible top or strippingplate which is providedwith key ways 33 which register with key ways 34 carried by the casing1, it being noted that the key way 33 is in the present instancesubstantially rectangular in form in order to coperate with the ends 35of the keys 36, the lower end 37 of said keys, as seen in Fig. 12, beingadapted to be seated in the key ways 34 carried by the casing, so thatany improper movement of the stripping plate 32 relative to the casingis positively prevented and the parts are always interlocked when inassembled position.

38 designates lugs carried by the stripping plate to which are pivotedlatches 39 having apertures 40 thereA in with which lugs 41 carried bythe casing 1 engage, as most clearly indicated in Fig. 15.

42 designates the arbor which as most clearly seen in Fig. 20 is in thepresent instance constructed in a plurality of parts provided with wings43. The interme,

diate part 44 has tapered keys '45 at its ends which interlock with keyways 46 in the other two arbor members, said keys preferably taperingtowards each other.

47 designates the sand forming the core.

The arbor 42 has secured thereto hemispherical blocks 48.

49 designate prints which as shown in Fig. l() are semicircular incross-section and tapering as seen at 50.

51 designates a shell pattern which as seen in Fig. 11 is provided withapertures 52 and 53.

54 designates a hand print which as seen in Fig. 24 is cut away orrecessed at 55 in order that the operator may insert his fingers beneaththe shell pattern to remove the same.

56 designates the bottom flask which is provided with handles 57 and keyways 58.

59 designates a transverse member having a suitably shaped recess 60therein, the contour of which corresponds to the article which is to becast.

61 designates the top flask provided with handles 62 and lugs or keys 63which are adapted to coperate with the keyways 58 in the bottom flask56.

64 designate preferably wedge shaped lugs on the flasks 5G and 61 withwhich fastening keys or members 65 engage to fasten the flasks together.

The flask 6l is provided with cross members 66 which are cut away toreceive the article to be cast.

67 designates the core box comprising a bottom member 68 hinged at 69 tothe member 70. The member 68 is cut away or chambered to receive apattern 5l and the prints 49 as seen in Fig. 13 are shown in assembledposition with respect thereto. The member 70 is cut away or chambered toreceive the other pattern 71 and the prints 49 are shown in properposition with respect to the pattern 71. The pattern 7l is provided withpins 72 and 73 which coperate with the apertures 53 and 52 in the otherpattern 51 as may be clearly understood from Figs. 13 and 14.

74 designates a longitudinally extending member which serves as an eXtrasupport for the stripping plate and is adapted to rest upon the dropplate 24 as seen in Fig. 10.

The operation is as follows:-IIaving the parts as seen in Fig. 5, thelocking member 36 are seated in the guides or ways 34 of the casing andthe flask 5G together with the pattern 71 are placed on said casing sothat the upper ends 35 of the members 36 engage with the guides 53carried by the flask 56 The flask 56 is now rammed up, after which it isremoved. The cross pieces 19 are reversed and the drop plate 24 andstripping plate 32 are turned over so that the ribs 23 on the reversedside of plate 24 will engage the grooves 22 in the cross pieces 19. Thelockingmembers 36 are removed and the flask'Gl together with the pattern5l are placed in position and suitably rammed up. Owing to the manner inwhich the different parts of the arbor interlock the same is maintainedin assembled condition and any improper movement of the parts p evented.After the flask 56 has been rammed up this flask has to be reversed. Theflask 61 is then rammed up and placed directly on top of the mold formedn the flask 56.

It is thought to be unnecessary to describe in detail the completemolding operation since the same is well known to those skilled in theart, but I wish to call special attention to the manner in which thedrop plate is actuated. When the lever 17 is depressed the shafts 8 arerocked so that the cams 18 will co-act with the cross pieces 19 andraise the same together with the drop plate until the ribs on the latterare flush with the upper lace of the stripping plate, it being notedthat the shoulder 11. on the link 10 co-acts with the lever 12 to limitthe amount of rotation given to the cams 18. When the lever 17 is raisedthe cams are rotated in a reverse direction, the amount of movementgiven to the rods or shafts S being limited by the engagement of thelever 12 with the shoulder 15 carried by the link 14, and the drop platewill be lowered so that the ribs 23 will be below the face of thestripping plate.

In the molding machines heretofore employed, the two castings have beenmade at a singleoperation. This makes the operating parts of the machineso heavy that it is necessary to employ from two to four men to operatethe machine when castings such as are herein shown are produced.

In my novel construction of molding machine, I yhave so reduced the sizeand weight of the machine that the same can be operated by a singleperson and in order to bring about this result, I have devised a machinein which a single casting is made at a time and in order that themachine may be handled by a single operator I employ a novel constructonof reversible drop plate and stripping plate. Since the arbor is locatedon one side only of the stripping plate it is necessary that thestripping plate be reversed and since a right and left casting is to -beproduced, it is necessary that the drop plate be reversed as is evidentto those skilled in the art.

It will now be understood that by the employment of a reversible dropplate and stripping plate the number of parts which it is necessary toemploy to produce a reliable and satisfactory casting is reduced to aminimum, and not only is the machine itself greatly simplified but thenumber of casting which a melder is enabled to turn out greatlyincreased.

It is further to be noted that owing to the employment of my novellocking and alining mechanism that the co-acting parts will always bemaintained in alinement and that the liability of imperfect castingsbeing produced is practically eliminated.

It will now be apparent from the foregoing that I have devised a noveland useful construction of molding machines Which embodies the featuresof advantage enumerated as desirable in the statement of invention andthe above description and while l have preferred to show oneV embodimentthereof which has been found in practice to give satisfactory andreliable results it is to be understood that my invention issusceptibleof modification in various particulars without departing from the spiritand scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what l claim as new and desire tosecure by Letters Patent, is:-

1. In a molding machine, a r'eversible drop plate having dissimilarpattern receiving means on opposite sides thereof, and means foractnatingsaid plate.

L. In a molding machine, a reversible drop plate having dissimilarpattern receiving ribs on opposite sides thereof, and means foractuating said plate.

Il. ln a moldingl machine, a casing, a reversible drop plato havingdissimilar pattern receiving ribs on opposite sides thereof movahlymounted therein, a stripping plate different on opposite sides carriedby said casing. and means for locking said stripping plate to saidcasing.

-l. In a molding machine, a casing, a reversible drop plate havingdissimilar pattern receiving ribs on opposite sides thereof movablymounted therein, a stripping plate different on Opposite sides carriedby said casing and a plurality of cams for actuating said drop plate.

5. In a molding machine, a casing, a reversible drop plate havingdissimilar' pattern receiving ribs on opposite sides thereof rnovablymounted therein, a reversible stripping plate different on oppositesides carried by said casing. and means for locking said plate to saidcasing.

ti. In a molding machine, a casing, guide members car'- ried thereby. areversible drop plate having dissimilar pattern supporting ribs onopposite sides thereof guided by said members, a reversible strippingplate different on opposite sides carried by said casing, means foractuatin`V said drop plate, and stops for limiting the movement of saidmeans.

T. In a molding machine, a casing, guides therein, cross bars eoactingwith said guides, a reversible drop plate having dissimilarl patternreceiving ribs on opposite sides thereof carried by said bars. astripping plate different on oppositie sides carried by said casing, andmeans for actuating said drop plate.

S. In a molding machine, a casing, guides therein, cross bars co-actingwith said guides, a reversible drop plate haring dissimilar' patternreceiving ribs on opposite sides thereof carried 'by said bars, moansfor preventing relative movement o1' said bars and drop plate, astripping plate different on opposite sides carried by said casing, andmeans for actuating said drop plate,

il. in a molding machine, a casing, a reversible drop plate havingdissimilar pattern supporting ribs on opposite sides thereof movablymounted therein, a reversible stripping plate different on oppositesides carried by said casing, latches pivoted to said stripping plate,and means on the casing co-acting with said latches to maintain saidstripping plate and casing in assembled position.

l0, ln a molding machine, a casing, guides therein, cross bars co-actingwith said `guides, a reversible drop plate having dissimilar' patternsupporting ribs on opposite sides thereof carried by said bars, meansfor preventing relative lateral movement of said plate and bars, areversible stripping plate different on opposite sides carried by saidcasing, and guides carried by said casing and co-acting with saidstripping plate to prevent improper. lateral movement of the latter'.

l1. In a molding machine, a casing, a reversible dropped plate, havingdissimilar pattern supporting ribs on opposite sides thereof movablymounted therein. a reversible strippingplate different on opposite sidesdetachably secured to said casing, means for actuating said drop plate.and adjusting devices for said actuating means.

12. In a molding machine, a casing, guides therein. cross hars engagingsaid guides, cam shafts adjustably mounted in said casing, cams on saidshafts co-acting with said cross bars. means for vertically adjustingsaid shafts, actuating means for said shafts. a reversible drop platehaving dissimilar pattern supporting ribs on opposite 'sides thereofengaging said guides, and a reversible strippingl plate different onopposite sides detachably carried by said casing.

13. In a molding machine, a casing, a reversible drop plate havingdissimilar pattern supporting ribs on opposite sides ther-eet' nrovablymounted therein, a r'eversible stripping plate different on oppositesides carried by said casingl and detachably secured thereto, supportingmembers carried by said drop plate adapted to engage said strippingplate when the former is in raised position, and means for actuatingsaid drop plate.

1l. In a moldingmachine, a casing, a reversible drop plate havingdissimilar pattern supporting ribs on 'opposite sides thereof mov-ablymounted thereon, a reversible stripping plate carried by said casing,latches pivoted to said stripping plate and lugs on the casing coactingwith said latches to maintain said strippingplate and casing inassembled position.

FREDRICK J. GEEHRING.

Witnesses JOHN lnrLLUfi, Wn. G. HnnoN.

